<div class="box round first">
    <h2><?php echo __('Admin Add Provider'); ?></h2>
<div class="providers form block">
<?php
echo $this->Form->create('Provider', array(
    'type' => 'file',
    'url' => array(
        'controller' => 'providers',
        'action' => 'add'
    )
));
 ?>
 <fieldset>
 <?php
echo $this->Form->input('name');
echo $this->Form->input('file', array('type' => 'file'));
echo $this->Form->input('link');
?>
    </fieldset>
<?php echo $this->Form->end(__('Submit')); ?>
</div>
</div>